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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 19 (Automatic Transmission - ALLISON - Introduction (2 Of 2)) >> Specifications >> Solenoid and Clutch Chart (Normal Mode)

Solenoid and Clutch Chart (Normal Mode)

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Solenoid and Clutch Chart (Normal Mode)

Range Status Logic State Clutch to Line Pressure Control Solenoids Shift Solenoids TCC Sol.
PCS1 PCS2 SS1 SS2 SS3  
Steady State R - De-energized; Low and Reverse Clutch Applied Energized; 3rd, 5th, and Reverse Clutch Applied ON ON ON OFF
Garage Shift R-N - De-energizing; Low and Reverse Clutch Applied Energizing; 3rd, 5th, and Reverse Clutch Trimming Off ON ON ON OFF
Garage Shift N-R - De-energizing; Low and Reverse Clutch Trimming On Energizing; 3rd, 5th, and Reverse Clutch Trimming On ON ON ON OFF
Steady State N or P - De-energized; Low and Reverse Clutch Applied De-energized; Exhausted ON ON ON OFF
Upshift N-1 - De-energized; Low and Reverse Clutch Applied Energized; 1-2-3-4 Clutch Trimming On ON ON ON OFF
Downshift 1-N - De-energized; Low and Reverse Clutch Applied Energized; 1-2-3-4 Clutch Trimming Off ON ON ON OFF
Steady State 1 1-2-3-4 Clutch De-energized; Low and Reverse Clutch Applied De-energized; 2-6 Clutch Exhausted OFF ON OFF OFF
Upshift 1-2 1-2-3-4 Clutch Energized; Low and Reverse Clutch Trimming Off Energized; 2-6 Clutch Trimming On OFF ON OFF OFF
Downshift 2-1 1-2-3-4 Clutch Energized; Low and Reverse Clutch Trimming On Energized; 2-6 Clutch Trimming Off OFF ON OFF OFF
Steady State 2 1-2-3-4 Clutch Energized; 3rd, 5th, and Reverse Clutch Exhausted Energized; 2-6 Clutch Applied OFF OFF OFF OFF
Upshift 2-3 1-2-3-4 Clutch De-energized; 3rd, 5th, and Reverse Clutch Trimming On De-energized; 2-6 Clutch Trimming Off OFF OFF OFF OFF
Downshift 3-2 1-2-3-4 Clutch De-energized; 3rd, 5th, and Reverse Clutch Trimming Off De-energized; 2-6 Clutch Trimming On OFF OFF OFF OFF
Steady State 3 1-2-3-4 Clutch De-energized; 3rd, 5th, and Reverse Clutch Applied De-energized; 4-5-6 Clutch Exhausted ON OFF OFF OFF
Upshift 3-4 1-2-3-4 Clutch Energized; 3rd, 5th, and Reverse Clutch Trimming Off Energized; 4-5-6 Clutch Trimming On ON OFF OFF ON
Downshift 4-3 1-2-3-4 Clutch Energized; 3rd, 5th, and Reverse Clutch Trimming On Energized; 4-5-6 Clutch Trimming Off ON OFF OFF OFF
Steady State 4 4-5-6 Clutch Energized; 3rd, 5th, and Reverse Clutch Exhausted Energized; 1-2-3-4 Clutch Applied ON OFF ON ON
Upshift 4-5 4-5-6 Clutch De-energized; 3rd, 5th, and Reverse Clutch Trimming On De-energized; 1-2-3-4 Clutch Trimming Off ON OFF ON ON
Downshift 5-4 4-5-6 Clutch De-energized; 3rd, 5th, and Reverse Clutch Trimming Off De-energized; 1-2-3-4 Clutch Trimming On ON OFF ON ON
Steady State 5 4-5-6 Clutch De-energized; 3rd, 5th, and Reverse Clutch Applied De-energized; 2-6 Clutch Exhausted OFF OFF ON ON
Upshift 5-6 4-5-6 Clutch Energized; 3rd, 5th, and Reverse Clutch Trimming Off Energized; 2-6 Clutch Trimming On OFF OFF ON ON
Downshift 6-5 4-5-6 Clutch De-energized; 3rd, 5th, and Reverse Clutch Trimming On De-energized; 2-6 Clutch Trimming Off OFF OFF ON ON
Steady State 6 4-5-6 Clutch Energized; 3rd, 5th, and Reverse Clutch Exhausted Energized; 2-6 Clutch Applied OFF OFF ON ON